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Finding the Fourth Proportional to 615.08, 849.12 and 382.28

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Solution

The fourth proportional to 615.08, 849.12 and 382.28 is: 527.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.08 : 849.12 = 382.28 : x
  2. Step 2: Convert to fraction form
    615.08/849.12 = 382.28/x
  3. Step 3: Cross multiply
    615.08x = 849.12 × 382.28
  4. Step 4: Simplify right side
    615.08x = 324,601.59
  5. Step 5: Solve for x
    x = 324,601.59/615.08
  6. Step 6: Final answer
    x = 527.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.